Diaphragm ship s pump



(No Model.) 3 sheets'shefetl.

J. EDSON. l].`)ia,p]:1ragm Shps Pump. l No. 234,551. Patented Nov. 16, E880.

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Patented Nov. 16, |880.

(No Model.)

MPEIERS, FHDTWLIIHCGRAPHER, WASHINGTON. u c.

(No Model.) 3 Sheets-Sheet 3.

J. EDSON. Diaphragm Ships Pump, No. 234,551. Patented Nov. i6, |880.

,Erica JACOB EDSON, OF BOSTON, MASSACHUSETTS.

DIAPHRAGM SHIPS PUMP.

SPECIFICATION forming part of Letters Patent No. 234,551, dated November 16, 1880.

Application filed July 16, 1880.' (No model.)

To all whom it may concern:

Be it known that I, JACOB Epson, a citizen of the United States, residing at Boston, n

the county of Suffolk and State of Massachusetts, have invented certain new and'luseful Improvements in Diaphragm Ships Pumps; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or iigures of reierence marked thereon, which form a part of this specification.

This invention relates to improvements in diaphragm ships pumps 5 and it consists in the construction, arrangement, and combination of parts, as will hereinafter be more fully shown and described, reference being had to the accompanying drawings, on which Figure 1 represents a plan view ot' my improved pump. Fig. 2 represents a sectional side elevation. Fio'. 3 represents a vertical section on the line A B, shown in Fig. 1. Fio. 4 represents a cross-section on the line O D, also shown in Fig. 1. Fig. 5 represents a plan view of the base or chamber, showing the diaphragm and piston as being removed, and Fig. 6 represents a bottom view ofthe piston.

Similar letters refer to similar parts wherever they occur on the different parts ot' the drawings.

a is the base of the pump, which is secured to the deck of the vessel by means ofpsuitable screws. Said base a projects downward, has a chamber, a', that communicates with the bilge ot' the vessel by means of the suctionpipe a, the upper end of the latter being for this purpose screwed into a screw-threaded recess in the center of the chamber a', or otherwise secured thereto in a suitable or equivalent manner.

b represents the head and lever supporter for the pump, between the under side of which and the upper edge oi' the base ct is secured the elastic rubber diaphragm c, as shown. d d d are the holding-bolts for securing the head b, base a, and rubber diaphragm c together. p

The upper part of the base a projects inward as a conical or convex supporting-ring, a, for the elastic rubber diaphragm c, which snpand natural position without allowing it to slip oft' its supporting surface. The radial grooves a a serve to allow the water within the chamber a to reach the annular rgrooves ai" div, and thus to aid in the gradual and automatical release of the elastic rubber diaphragm `c during the upward stoke of the piston-head,

and -thus to prevent its cohesion to the supporting ring or surface a", as well as to hold it onto the rings or bars av av by the force required to lift the water.

c is the reciprocating annular piston, located on the upper side ot' the elastic rubber diaphragm c, as shown, below which is arranged the annular conical or convex supporting-ring c', having annular rings or bars c e, annular grooves c'" c", and radial grooves civ ci", in a similar manner and for a similar purpose as heretofore described in relation to the construction and operation ot' the stationary supporting-surface a.

cT ev are hollow vertical ports, projecting upward from the annular piston e, on the top of which rests the cross-head f, the latter being secured to the said uprights c7 cv, the piston c, diaphragm c, and supporting -ring c by means of the screw-bolts g g and their nuts g g,as shown.

The rubber diaphragm c is molded to an form, as shown, by which it is adapted to it the convex bearing-surfaces a" c when the pump is at rest, as represented in Figs. 3 and Y IOO c c are annular conical projections on the upper side of the molded double diaphragm c, and serving as packing-rings at the junction ot' the holding-bolts gg and the hollow uprights ev cv, as shown in Fig. 4.

h is the lift-valve, having its seat on the annular rubber ring c', and is the suction-valve, having its seat ou the upper end ofthe suctionpipe a, as shown, for the purpose of utilizing the smallest amount of space possible between the said valves, as well as for the purpose of making them self-adjustable onto their seats and in their proper relations one to another during the action of the pump. I construct them as follows: The lift-valve h is provided on its under side with a central and conical recess, hf, which, in combination with the conical projection t" on the top ofthe suction-Valve t', serves to automatically adjust the lift-valve h onto its seat 5 and to still further effect this purpose the suctionfvalve t is provided with a conic frustum, i, acting conjointly with the inclined projections h h on the under side of the lift-valve 7L, as shown.

i is a cup or recess at the top ot' the suction-valve t', that serves to retain grit and impurities that are pumped up through the suction-pipe, and thereby to prevent the proper closing of the valve on its seat.

The conical projection t' on the upper part ot' the suction-valve i is provided with a perforation, il", large enough to allow one or more fingers ofthe hand to be inserted in case it is required to remove the said valve or lift it from its seat to empty the valve-chamber, or for any other purpose. i" is a secondary and smaller hole above the perforation iv in the conical projection i, through which a hook or wire can be inserted to raise the valve when dcsired.

h" is an annular cup or recess on the upper side of the lift-valve l1, which cup or recess serves to retain water, which, as the valve is slightly tipped to one side during its up-anddown motion, is made to overflow, and thereby to lubricate the said valve and to make it iit more closely on its scat. I make the said liftvale h as light as possible, so that it can be raised with a minimum of power 5 and to insure its quick closing, and to provide a stop against which it will strike when raised to its fullest extent, I use a device as follows: On the crosshead f is hung loosely the valve-stop 7c, that is provided with a slot-hole, k', in its upper end, where it embraces the cross-headf, so that it will serve as a stop when the central projection, hiv, on the upper side of the lift-valve h is brought to bear against the under side of said valve-stop during the upward motion of said lift-valve, and in this manner the said piece 7o answers the purpose to act as a stop for the litt-valve h.

k is a semicircular side extension on the piece k, which is arranged to embrace one of the uprights cv, by which the latter is made to serve as a guide for the piece k. Thelatteris cast in two halves, that are secured together by means of the set-screw k'".

The head I) is provided on one side with a nose or delivery-place, b', as shown, and upon the upper side otl said nose are two projections, b b, made, as shown, for the purpose of securing to the nose b', by means of a cord or wire, duc., a suitable hose, so as to conduct the water over lthe decl; without soiling it, or for any other purpose, as may be required.

The crosshead j' is provided midway between its ends with two concentric circular surfaces, f andf", the formera smaller one, and adapted as a lifting-support for the lever l, which is for this purpose provided with a recess, l', iitting around a portion ot the circular surface f. rllhe extreme inner end ot' the lever Z is curved upward, as a lip, l, that rests on the top ot' the larger circular surface f on the cross-head f, by which the piston is forced downward during the downstroke of the lever. B y this peculiar connection between the lever and its cross-head I am able to connect and disconnect the lever very rapidly, as may be needed in case of repairs; and as the rubbing-surfaces are very small, as compared with other pump-connections, a minimum of frictional resistance is to be overcome.

The lever l is made with a tapering socket, Z", for the reception of the curved reversible handle m, which latter is to be used in the position as shown in full lines in Fig. 3 in case the vessel is without deck-load; but if the deck is loaded and the pump is to be used, it is only necessary to reverse the handle to the position shown in dotted lines in said Fig. 3.

As the socketed lever Zinclines toward the middle of the pump, it will be seen that no fastening device is required to attach the handle m to the socketed lever.

In one piece with the upper end of the socketed lever l is cast a semicircular sleeve, li", fitting loosely over the convex skeleton-bearing bf, that is cast in one piece with the upper rim of the head b, as shown. A slot hole or opening, bi", is made midway on the skeletonbearing ZW. The lever Z and the bearing 11 are jointed together by means of the T-headed bolt n, its head resting on the under side of the bearing 11 in the concavity, as shown, and its screw-threaded body passing through the opening biv and up through a perforation in the semicircular sleeve liv, on the upper side of which it is provided with a pair of nuts, n nf, as shown.

A similar skeletoirbearing is cast to the rim of the head b opposite to the one marked 11 in case it may be required to reverse the position of the lever l.

What I wish to secure by Letters Patent, and claim, is

l. In a diaphragm-pump, the stationary supporting-surface c", having annular bars 0r projections c" a", grooves ai" ai", and radial grooves a al, and reciprocating supportingsurface c', with its annular bars or projections e e", annular grooves 0 6', and radial grooves civ ci", combined with a exible diaphragm, c, as and for the purpose set forth.

IOO

IIO

hook-hole i", as and for the purpose set forth.

4. In a diaphragm ships pump, the piston ro e, with its ports ev ev, and cross-head f, in combination with the lift-valve h and the valvestop k 7c 7c", as and for the purpose set forth.

5. The herein-described elastic diaphragm c, having central opening for the lift-valve h, as

shown, and adapted to fit the stationary sup- 15 porting-surface a" when the pump-piston is at rest in its lowest position, in manner as herein set forth.

6. In combination with the cross-head f and its concentric surfaces f f, the lever Z, with zo its recess Z', lip Z, semicircular sleeve liv, and the skeleton-bearing 11. with its T-headed fastening-bolt n, as and for the purpose set forth.

JACOB EDSON. In presence of- ALBAN ANDRN, HENRY GHADBoUIm.l 

